164565009937 has 2 divisors, whose sum is σ = 164565009938. Its totient is φ = 164565009936.

The previous prime is 164565009899. The next prime is 164565009941. The reversal of 164565009937 is 739900565461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101559491856 + 63005518081 = 318684^2 + 251009^2 .

It is a cyclic number.

It is not a de Polignac number, because 164565009937 - 2¹⁵ = 164564977169 is a prime.

It is not a weakly prime, because it can be changed into another prime (164565009997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82282504968 + 82282504969.

It is an arithmetic number, because the mean of its divisors is an integer number (82282504969).

Almost surely, 2^164565009937 is an apocalyptic number.

It is an amenable number.

164565009937 is a deficient number, since it is larger than the sum of its proper divisors (1).

164565009937 is an equidigital number, since it uses as much as digits as its factorization.

164565009937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 164565009937 in words is "one hundred sixty-four billion, five hundred sixty-five million, nine thousand, nine hundred thirty-seven".